semioniy Posted May 4, 2022 Share Posted May 4, 2022 (edited) Hi. Usual stuff, new to Unraid and all... So, I had 2 SSDs (2x480GB) in a cache pool, and decided to add a new one, so that I could hold all my (totally legal) downloading torrents off the spinning drives. I installed a new 1TB SSD, pre-cleared it, stopped the array, assigned it to the pool, started the array, and viola, I still have my 480GB of free space, just as before. Now, it does say that pool size is now 980GB instead of 480, but given the same amount of free space as it was before adding a new drive, I find it hard to not ask "What gives?!" Can someone please point me in the right direction? And if the answer is "start the parity check", then how do I start a parity check on the cache alone? I don't want to spin all the drives for nothing, as I just made a parity check yesterday. Unraid version: 6.9.2 Edited May 4, 2022 by semioniy added Unraid version Quote Link to comment
Solution JorgeB Posted May 4, 2022 Solution Share Posted May 4, 2022 Free space with an odd number of devices won't be correct, it's a btrfs issue, but the total space is usable and the free space reported will get better as you fill the pool. 1 Quote Link to comment
semioniy Posted May 4, 2022 Author Share Posted May 4, 2022 Thanx. So the answer was to fill it to the brim. 956GB is not 980, but noticeably better than 480 😁 Quote Link to comment
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